CN209250078U - Stretching mechanism - Google Patents
Stretching mechanism Download PDFInfo
- Publication number
- CN209250078U CN209250078U CN201822166402.5U CN201822166402U CN209250078U CN 209250078 U CN209250078 U CN 209250078U CN 201822166402 U CN201822166402 U CN 201822166402U CN 209250078 U CN209250078 U CN 209250078U
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- CN
- China
- Prior art keywords
- pinch roller
- rocker arm
- coiling pinch
- coiling
- traction piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a kind of stretching mechanisms, including rack, rocker arm is rotatably equipped in rack, it is rotatably equipped on the rocker arm for corresponding traction piece one end around the coiling pinch roller entered, the other end is laid out, the pivot center of the pivot center of coiling pinch roller and the rocker arm is arranged in parallel; is equipped with the pinch roller driving mechanism for driving the coiling pinch roller rotation on rocker arm, is provided with by the coiling pinch roller in rack for cooperating with the coiling pinch roller to apply stressed crimping rolling element to the traction piece.The utility model solves the problems, such as that stretching mechanism in the prior art needs to be arranged multiple friction winding wheels and leads to that its structure is complicated.
Description
Technical field
The utility model relates to the stretching mechanisms in power wiring field.
Background technique
In power wiring field, it is frequently encountered using stretching mechanism and pulls the traction piece flexible such as cable or rope,
To carry out unwrapping wire, promotion or the purpose for keeping flexible piece tension.
A kind of a kind of " the traction that aerial work uses as disclosed in Chinese patent CN106684760A of existing stretching mechanism
Machine ", the dragger include rack, traction mechanism and driving mechanism are provided in rack, traction mechanism is for the winding traction that rubs
Part, including at least one active friction winding wheel and at least one from dynamic friction winding wheel, active friction winding wheel and driven rub
Wipe winding wheel be rotatably arranged in rack respectively, active friction winding wheel and successively introduced from dynamic friction winding wheel by traction piece,
Winding and draw dragger, the power output end of driving mechanism is sequentially connected active friction winding wheel, active friction winding wheel and
From dynamic friction winding wheel, setting up and down and center of rotation is located in the same vertical plane, and traction piece is wrapped in actively with the figure of eight
Rub winding wheel and from dynamic friction winding wheel, is traction piece leading-in end from the left side of dynamic friction winding wheel, winds from dynamic friction
The right side of wheel is traction piece exit.
In use, traction piece in a manner of the figure of eight around active friction winding wheel and from dynamic friction winding wheel, traction piece
One end is entangled to through traction piece leading-in end, is then drawn through traction piece exit, drive of the active friction winding wheel in driving mechanism
Lower active rotation, to realize the purpose for driving traction piece mobile.Existing this dragger has problems in that: winding wheel
Active force between traction piece fully relies on the frictional force between winding wheel and traction piece to provide, it is therefore necessary to which setting is actively
Friction winding wheel and winding wheel is rubbed from dynamic friction winding wheel at least two to guarantee rubbing between winding wheel and traction piece of rubbing
Power is wiped, the setting of multiple friction winding wheels undoubtedly makes the structure of entire dragger more complicated.
Utility model content
The purpose of this utility model is to provide a kind of stretching mechanisms, are set with solving stretching mechanism needs in the prior art
It sets multiple friction winding wheels and leads to the problem of its structure is complicated.
In order to solve the above technical problems, the technical solution of the utility model is as follows:
A kind of stretching mechanism, including rack are rotatably equipped with rocker arm in rack, are rotatably equipped with and are used on the rocker arm
Corresponding traction piece one end is around the coiling pinch roller entered, the other end is laid out, the rotation axis of the pivot center of coiling pinch roller and the rocker arm
Line parallel arrangement, is equipped with the pinch roller driving mechanism for driving the coiling pinch roller rotation on rocker arm, in the coiling pressure in rack
Wheel is other to be provided with for cooperating with the coiling pinch roller to apply stressed crimping rolling element to the traction piece.
The pinch roller driving mechanism includes decelerating motor, and decelerating motor has axis along same with the axis of the coiling pinch roller
The power output shaft of axis or parallel arrangement, the power output shaft of decelerating motor and the coiling pinch roller are sequentially connected.
The crimping rolling element is set in the rack by rolling body support frame, and crimping rolling element includes at least two edges
The circumferentially spaced fabric wheel of coiling pinch roller.
In the opposite side of the crimping rolling element, rotation is provided with for carrying out to traction piece around outlet on the rocker arm
The guide roller of guiding.
The guide roller has at least two, and each guide roller is along same circumferencial direction arranged for interval.
The coiling pinch roller and guide roller are divided into the both ends of the rocker arm.
The radius of the coiling pinch roller is 3 ~ 6 times of spacing between the axis of the axial line distance rocker arm of the coiling pinch roller.
The utility model has the following beneficial effects: the dragger in the utility model is when in use, one end of traction piece pass through around
Line pinch roller around entering, draw through coiling pinch roller and lay out by other end, and driving mechanism drives coiling pinch roller to drive traction piece movement, around
Line pinch roller gives traction piece one active force, and traction piece gives coiling pinch roller one reversed active force, which makes
Rocker arm is around itself axis oscillating, so that coiling pinch roller is mobile close to crimping rolling element direction, coiling pinch roller and crimping rolling element
Cooperation generates pressure to traction piece, improves the frictional force between coiling pinch roller and traction piece by the pressure, guarantees coiling pinch roller
To the friction effect between traction piece, therefore the traction to traction piece only can be completed by a coiling pinch roller, be not required to as
Multiple friction winding wheels are set to improve frictional force as the prior art, simplify the structure of product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the utility model.
Specific embodiment
A kind of embodiment of stretching mechanism includes rack 10 as shown in Figure 1:, and rack is length along right and left in the present embodiment
To the beam structure of extension, the rocker arm 2 that pivot center extends along the longitudinal direction is rotatably equipped in rack, the expression of figure middle term 4 is shaken
The shaft of arm 2 is rotatably equipped with for corresponding 6 one end of traction piece in the coiling pinch roller 3 entered, the other end is laid out, figure on rocker arm
Item 5 indicates the shaft of coiling pinch rollers 3, and the pivot center of coiling pinch roller and the pivot center of rocker arm are arranged in parallel, coiling pinch roller
Pivot center is in the left side of rocker arm pivot center.Coiling pinch roller is equipped with a coiling race, coiling pinch roller in the present embodiment
Radius be coiling pinch roller axial line distance rocker arm axis between four times of spacing.Case has driving to turn around line pressure on rocker arm
Dynamic pinch roller driving mechanism, pinch roller driving mechanism include decelerating motor 11, and decelerating motor 11 has axis edge and coiling pinch roller
The power output shaft of axis coaxle arrangement, the power output shaft of decelerating motor and the coiling pinch roller are sequentially connected, the present embodiment
The center of middle coiling pinch roller has been located at driving hole, and the power output shaft of decelerating motor is plugged in driving hole, and power output shaft is logical
Key, keyway arrangements and the driving hole is crossed to be sequentially connected.
It has been located at rolling body support frame in rack on the left of coiling pinch roller, has rolled body support frame and include vertical frame 9 and be fixed on institute
The fanning strip 8 for stating vertical frame top, in fanning strip, close to the side rolling assembling of coiling pinch roller, there are three between coiling pinch roller circumferential direction
Every the fabric wheel 7 of arrangement, the pivot center of fabric wheel 7 is arranged along the longitudinal direction, and each fabric wheel, which together forms, to be used for and coiling
Pinch roller cooperates to apply stressed crimping rolling element to traction piece.It is useful in the rotation setting of the opposite side of crimping rolling element on rocker arm
In the guide roller 1 being oriented to around outlet to traction piece, there are three guide rollers 1, and each guide roller is along same circumference side
To arranged for interval, coiling pinch roller and guide roller are divided into the both ends of rocker arm.In the present embodiment under the guiding of guide roller, lead
The pivot center of the exit axis and rocker arm that draw part intersects vertically, and active force caused by the exit of such traction piece will not
Torque is generated to coiling pinch roller, because in actual operation, the exit of coiling pinch roller may be connected with other draggers,
Its exit can give one active force of coiling pinch roller, by the guiding of guide roller, the active force is avoided to generate torque to rocker arm.
When in use, the right side after the right end pile warp coiling pinch roller one of traction piece encloses through coiling pinch roller is drawn, guide roller
It is guided for the direction that lays out to traction piece.Driving mechanism drive coiling pinch roller rotationally clockwise, traction piece give around
Line pinch roller one active force towards left direction, rocker arm is dynamic towards left swing, and coiling pinch roller is mobile towards fabric wheel and carries out to traction piece
It squeezes, the frictional force between coiling pinch roller and traction piece is improved by the extruding, so that only a coiling pinch roller can band
The purpose of dynamic traction piece is mobile, realizes normal tension stringing, traction enhancement, simultaneously because the presence of extruding force, so that traction
Part is not required to be wrapped over more circle numbers on coiling pinch roller, reduces the abrasion to traction piece.
In the other embodiments of the utility model: the radius of coiling pinch roller is the axial line distance rocker arm of the coiling pinch roller
Axis between arbitrary value in 3 times, 6 times or 3 ~ 6 times of spacing, the radius of certain coiling pinch roller is the axis of the coiling pinch roller
3 ~ 6 times of spacing of other values between the axis of linear distance rocker arm, such as the radius of coiling pinch roller is the axis of the coiling pinch roller
1 times or 7 times of spacing between the axis of linear distance rocker arm；The number of guide roller can also be configured as needed, such as
Say one, two or other numbers, certain guide roller can not also be set, and the mechanism of this stretching at this time can be used for lifting heavy,
The exit of traction piece is free end, weight is fixed on the rack, by the rotation of coiling pinch roller, rack can be along traction
Part moves up；The power output shaft of driving mechanism can also be arranged in parallel with the axis of coiling pinch roller, at this time power output shaft
Transmission can be realized by gear or transmission belt between coiling pinch roller；Crimping rolling element can also be tape loop or endless-chain
Item；Coiling race on coiling pinch roller as needed can also there are two or it is multiple.
Claims (8)
1. a kind of stretching mechanism, including rack, it is characterised in that: be rotatably equipped with rocker arm in rack, rotate dress on the rocker arm
Equipped with for corresponding traction piece one end around the coiling pinch roller entered, the other end is laid out, the pivot center of coiling pinch roller and the rocker arm
Pivot center parallel arrangement, the pinch roller driving mechanism for driving the coiling pinch roller rotation is installed, in institute in rack on rocker arm
It states and is provided with by coiling pinch roller for cooperating with the coiling pinch roller to apply stressed crimping rolling element to the traction piece.
2. stretching mechanism according to claim 1, it is characterised in that: the pinch roller driving mechanism includes decelerating motor, is subtracted
Speed motor has axis edge and the axis coaxle of the coiling pinch roller or the power output shaft of parallel arrangement, the power of decelerating motor
Output shaft and the coiling pinch roller are sequentially connected.
3. stretching mechanism according to claim 1, it is characterised in that: the crimping rolling element is by rolling body support frame setting
In in the rack, crimping rolling element includes at least two along the circumferentially spaced fabric wheel of coiling pinch roller.
4. stretching mechanism according to claim 1, it is characterised in that: in the opposite of the crimping rolling element on the rocker arm
Side rotation is provided with for the guide roller being oriented to around outlet to traction piece.
5. stretching mechanism according to claim 4, it is characterised in that: the guide roller has at least two, each orienting roll
Wheel is along same circumferencial direction arranged for interval.
6. stretching mechanism according to claim 4, it is characterised in that: the exit axis of traction piece and the rotation axis of rocker arm
Line intersects vertically.
7. stretching mechanism according to claim 4, it is characterised in that: the coiling pinch roller and guide roller are divided into described
The both ends of rocker arm.
8. stretching mechanism described in any one according to claim 1 ~ 7, it is characterised in that: the radius of the coiling pinch roller is institute
3 ~ 6 times for stating spacing between the axis of the axial line distance rocker arm of coiling pinch roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822166402.5U CN209250078U (en) | 2018-12-24 | 2018-12-24 | Stretching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822166402.5U CN209250078U (en) | 2018-12-24 | 2018-12-24 | Stretching mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209250078U true CN209250078U (en) | 2019-08-13 |
Family
ID=67534146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822166402.5U Active CN209250078U (en) | 2018-12-24 | 2018-12-24 | Stretching mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209250078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412083A (en) * | 2018-12-24 | 2019-03-01 | 尚廷东 | A kind of stretching mechanism |
-
2018
- 2018-12-24 CN CN201822166402.5U patent/CN209250078U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412083A (en) * | 2018-12-24 | 2019-03-01 | 尚廷东 | A kind of stretching mechanism |
| CN109412083B (en) * | 2018-12-24 | 2024-02-27 | 尚廷东 | Stretching mechanism |
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